I find that things that are designed to do more than one thing often don't do a great job at either.
The Fog cutter is certainly a clever design, I had one for a while. But it's nowhere near the cutting tool that EMT shears are. Playing around with both of them, there was no question which one I would want to use in an underwater emergency, especially with heavy gloves on.
The hinge makes it less of a sturdy knife if you really need to pry something, and the knife makes it less of a cutter when you use it as a scissors. Just compare the direction of force on the blades to that with EMT shears. Plus, if that blade inner blade gets dull it's going to be hard to sharpen. You can sharpen EMT shears for a few bucks - you throw them away and get another pair when you need it.
There's a reason why you don't see a lot of these carried by divers on northeast wrecks where you are likely to encounter entanglement hazards.
The Fog cutter is certainly a clever design, I had one for a while. But it's nowhere near the cutting tool that EMT shears are. Playing around with both of them, there was no question which one I would want to use in an underwater emergency, especially with heavy gloves on.
The hinge makes it less of a sturdy knife if you really need to pry something, and the knife makes it less of a cutter when you use it as a scissors. Just compare the direction of force on the blades to that with EMT shears. Plus, if that blade inner blade gets dull it's going to be hard to sharpen. You can sharpen EMT shears for a few bucks - you throw them away and get another pair when you need it.
There's a reason why you don't see a lot of these carried by divers on northeast wrecks where you are likely to encounter entanglement hazards.